C%3A%5C%3A%5C%3A%5C%3A%5C%3A%E2%98%9EQuestion%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%5C%3A%7D%7D%7D" id="TexFormula1" title="{\huge\fcolorbox{blue}{black}{\pink{\:\:\:\:\:\:\:\:\:\:\:☞Question\:\:\:\:\:\:\:\:}}}" alt="{\huge\fcolorbox{blue}{black}{\pink{\:\:\:\:\:\:\:\:\:\:\:☞Question\:\:\:\:\:\:\:\:}}}" align="absmiddle" class="latex-formula"> What is Wave Optics?
the branch of optics that studies interference, diffraction, polarization, and other phenomena for which the ray approximation of geometric optics is not valid.
Probably for the umbilical cord that connects babies (from their early stages in the womb to their removal) to their mothers. The cord is cut, forming the belly button. This is analogous to astronauts in space.
